Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
FIBER LASER
Document Type and Number:
WIPO Patent Application WO/2019/056722
Kind Code:
A1
Abstract:
A fiber laser comprises a pump source (11), an annular optical path (10), a tuning device, and a current adjustment device. The pump source provides pump light for a resonant optical path. The tuning device is disposed on the annular optical path. The tuning device comprises a graphene film (263) and a first optical fiber (264), and the graphene film covers an end surface of a fiber core at one end of the first optical fiber. The current adjustment device is connected to the graphene film, and the current adjustment device is used to electrify the graphene film and adjust the current passing through the graphene film. By adjusting the current passing through the graphene film, the temperature of the graphene film is adjustable, and the modulation depth of the tuning device with respect to transmitted laser passing through the tuning device is modified, such that the performance of the fiber laser is adjustable. In addition, because the tuning device is an optical fiber device integrated by the first optical fiber and the graphene film, optical signal transmission loss via the tuning device is low, such that tuning performance of the fiber laser is improved.

Inventors:
LI CHENG (CN)
ZHENG ZHU (CN)
YANG BIN (CN)
XU FEI (CN)
DING QING (CN)
Application Number:
PCT/CN2018/080584
Publication Date:
March 28, 2019
Filing Date:
March 27, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SHENZHEN INST TERAHERTZ TECH & INNOVATION (CN)
SHENZHEN INST TERAHERTZ TECH & INNOVATION CO LTD (CN)
International Classes:
H01S3/067; G02F1/035
Foreign References:
CN107453198A2017-12-08
CN104377541A2015-02-25
CN106549291A2017-03-29
Other References:
HE, XIAOYING ET AL.: "Pulse-Width Tuning in a Passively Mode-Locked Fiber Laser With Graphene Saturable Absorber", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 26, no. 4, 15 February 2014 (2014-02-15), pages 360 - 363, XP011537952, ISSN: 1041-1135, DOI: doi:10.1109/LPT.2013.2294017
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
Download PDF: